<template>
    <view class="back icon-left" @click="onTap"></view>
  </template>
  
  <script>
  export default {
    methods:{
      onTap(){
        // 返回上一页
        uni.navigateBack()
      }
    }
  };
  </script>
  
  <style>
  .back {
    position: absolute;
    left: 50rpx;
    top: 50rpx;
    z-index: 9;
  
    display: flex;
    justify-content: center;
    align-items: center;
    width: 60rpx;
    height: 60rpx;
    border-radius: 50%;
    font-size: 23px;
    color: #fff;
    background-color: rgba(0, 0, 0, 0.5);
  }
  </style>